It had been a week since Shawn and Jennifer's last session with Deborah, where they both confessed their obsession with the other. Shawn admitting that after accidentally seeing his mother naked he started spying on her. Jennifer admitting that she knew Shawn was watching and on the spur of the moment decided to show off for him, going so far as to masturbate for him. Jennifer walking in on Shawn masturbating, and now all they could think about was sex with each other. Deborah had convinced both of them in their separate sessions to masturbate in front of her while describing what was going on in their mind's eye, and then given them both assignments to write down any sexual fantasies that they might have for the following week.
Shawn hadn't tried to spy on his mother again, even after Jennifer left the bedroom door open just a bit, hoping for at least one more. But after a couple of days she realized it probably wasn't going to happen. They managed to retain their normal relationship around each other, but every now and then, they could feel some of that unspoken sexual tension between them. It was taking everything they had to not act upon their sexual urges for each other.
Shawn started and ended almost everyday with his cock in hand thinking about fucking his mother. Jennifer used her morning shower to get herself off, and would masturbate before going to sleep, using the pillow to muffle her cries of pleasure, wishing that it was her son's cock and not her fingers inside her. They wrote down the fantasies they had during their masturbation sessions as Deborah had asked and brought them along for their next session.
Deborah looked out the window and smiled as she saw Jennifer and Shawn pull into her driveway. For this session she wore something a little different, she had decided on a tighter shirt than she usually wore. Not exactly form fitting, but a V-neck shirt that accentuated her 40DD tits and showed a decent amount of cleavage. She met them at the door.
"Hey guys," she said with a big smile on her face. "Come on in."
Shawn's eyes went wide when he saw what Deborah was wearing, she noticed but pretended not to.
"So I want to do something a little different today," Deborah said, leading them both into her office, "I want to have a session with both of you today."
Jennifer and Shawn looked at each other and then back at Deborah and shrugged.
"Okay, I guess." Shawn said.
The three of them sat down, Deborah in her easy chair and Jennifer and Shawn on the couch.
"Now, the reason I want you both in here is because last week, you both pretty much told me the same thing." Deborah said.
Mother and son both looked shocked, Shawn's jaw dropped, and Jennifer grimaced a bit.
"But you said..." Shawn started to say, but Deborah cut him off.
"I know, I know," Deborah said, "I've always promised both of you that whatever is said during our separate sessions stays separate, but after what you both told me last week, I think this is best for both of you. Now I gave you homework of sorts. Did you bring it with you?"
They both nodded, and looked nervously at each other before they handed the papers to Deborah.
"No," she said, "Give them to each other."
Even more nervous energy could be felt in the room as Shawn and Jennifer looked guiltily at each other and slowly exchanged papers filled with their sexual fantasies about each other.
"Go ahead, read them."
There was a long moment of silence as they slowly unfolded the papers and started reading. Deborah wondered what they had written, but she was more interested to see Jennifer and Shawn's reactions when they realized they were thinking the same things about each other. Shawn's jaw dropped as he read. His cock instantly got hard as he read the things his mother wrote about him. Jennifer's eyes went wide and her mouth hung open, a small circle of shock. Her pussy got wet as she realized her son felt the same way about her that she felt about him. The only noise in the room were the muffled sounds from outside, and the shuffling of papers as the two read page after page of their sexually explicit fantasies. After they were done (Shawn was done first due to writing more than his mother had), they looked at each other.
"Honey, I had no idea you felt that way about me." Jennifer said, "Do you really think I have..." she shuffled through the papers, "the best tits you've ever seen in your life?"
"Yeah, mom. I do." Shawn said, "I think they're perfect. From the moment I first saw them when I came home from Rich's house a few weeks ago."
He had used that day as well as Saturday, Tuesday and Thursday as springboards for some of his fantasies. Jennifer only knew about Tuesday and Thursday, and had used those for starting points for a couple of her fantasies. They also both used the day she had walked on him masturbating as starting points. The other fantasies they had written down were not inspired by the events of the last couple of weeks, but simply situations that popped into their heads while they were masturbating. They didn't hold back either, going into explicit detail about what they were doing to each other in their fantasies, using language they'd never used in front of each other before.
"I know this is very awkward for both of you, and I can imagine the past week must have been tense for the both of you. But I think it's best to have all this out in the open." Deborah said.
"That's an understatement." Jennifer said, "Since we're being so candid here, I will admit, I was hoping you'd try and take another peek at me. I even left the door open for you."
"If I had known, I would have," Shawn said, "But in my fantasies, as you can see, you were pretty receptive to me, but I didn't think it'd be the same in reality. I was afraid if you caught me, or if I was as bold as I was in my fantasy, you'd freak out. That's why I didn't try it again. But all I could think about since last week was fuc-- having sex with you."
"That's all I could think about too." Jennifer said, "Every time I touched myself, I wished it was you touching me. I don't know if you realized it this past week, but every chance I could get, I would watch you when I thought you couldn't see me."
Shawn let out a relieved sigh, "I did the same thing too."
"I know."
Shawn went wide eyed.